Răspuns :
x=200 (lei)
a) x + x * (15/100) = 200 + 200 * 15 / 100 = 200 + 30 = 230 (lei)
b) 230 + 230 * (20/100) = 230 + 23 * 2 = 230 + 46 = 276 (lei)
c) 276 - 276 * (10/100) = 276 - 27.6 = 248.4 (lei)
a) x + x * (15/100) = 200 + 200 * 15 / 100 = 200 + 30 = 230 (lei)
b) 230 + 230 * (20/100) = 230 + 23 * 2 = 230 + 46 = 276 (lei)
c) 276 - 276 * (10/100) = 276 - 27.6 = 248.4 (lei)
a)200:100*15=30; 200+30=230
b)230:100*20=46; 230+46=276
c)276:100*10=27,6; 276-27,6=248,4
b)230:100*20=46; 230+46=276
c)276:100*10=27,6; 276-27,6=248,4